VEHICLE CONTROL SYSTEM
First Claim
1. A vehicle control system for calculating an estimated gradient value of a travel road, comprising:
- an acceleration sensor that detects an acceleration of the vehicle;
wheel speed sensors that detects wheel speeds of the vehicle; and
a control device that calculates the estimated gradient value, whereinthe control device determines a travel direction of the vehicle when the vehicle travels as well as when the control device determines that the vehicle is traveling in one of the travel directions of a forward travel and a rearward travel, the control device calculates the estimated gradient value based on an output signal of the acceleration sensor and output signals of the wheel speed sensors, and when the control device determines that the vehicle is traveling in the other travel direction, the control device calculates the estimated gradient value based on an output signal of the acceleration sensor without using the output signals of the wheel speed sensors.
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Accused Products
Abstract
The vehicle control system controls a vehicle based on an estimated gradient value of a travel road. Further, the vehicle control system includes a front/rear acceleration sensor and wheel speed sensors, and a control device for calculating the estimated gradient value. Further, when the vehicle travels, the control device determines whether or not the vehicle is traveling rearward. Then, when the vehicle is traveling forward, the control device calculates the estimated gradient value based on an output signal of the acceleration sensor and output signals of the wheel speed sensors. In contrast, when the vehicle is traveling rearward, the control device calculates the estimated gradient value based on an output signal of the acceleration sensor.
13 Citations
6 Claims
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1. A vehicle control system for calculating an estimated gradient value of a travel road, comprising:
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an acceleration sensor that detects an acceleration of the vehicle; wheel speed sensors that detects wheel speeds of the vehicle; and a control device that calculates the estimated gradient value, wherein the control device determines a travel direction of the vehicle when the vehicle travels as well as when the control device determines that the vehicle is traveling in one of the travel directions of a forward travel and a rearward travel, the control device calculates the estimated gradient value based on an output signal of the acceleration sensor and output signals of the wheel speed sensors, and when the control device determines that the vehicle is traveling in the other travel direction, the control device calculates the estimated gradient value based on an output signal of the acceleration sensor without using the output signals of the wheel speed sensors. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification